Sheet-metal lock



April 16, 1929.

A. F. W. VIEHWEGER SHEET METAL LOCK 2 Sheets-Sheet 1 Filed April 27,1927 vvfgi w 1 v INVENTOR WVZek we e 2 ATTORNEY Ma a/$71 WA n April1929- A; F. w. VIEHWEGER 1,709,101

SHEE E T METAL LOCK Filed April 27, 1927 2 Sheets-Sheet 2 ,47 YJINVENTOR v 0 13 G dafusiif WVzehwe er,

yzmmklk u "ATTORNEY Patented Apr. 16, 1929.

UNITED STATES PATENT OFFICE.

AUGUST F. W. VIEHWEGER, F POUGHKEEPSIE, NEW YORK, ASSIGNOR TO VIEHWEGERLOOK COMPANY, INC., OF POUGHKEEPSIE, NEW YORK, A CORPORATION OF NEWYORK.

Application filed April 27 The present invention relates to looks andparticularly to door locks, and one object of the invention is toprovide a lock substantially all the operating parts of Wl'llCll are ofa form adapted to be stamped out from sheet metal, thus conducing toeconomy of manufacture and ease of assembly.

Another object is to, provide a lock 1n which substantially all theoperating parts are stamped out from sheet metal and the lock case orhousing and cover thereof are,

stamped out.

A further object is to provide a lock the strikers or bolts of which arespring actuated to locking position and which when in locking positionmay be so retained or set as to constitute a dead bolt lock.

A feature of the invention is the employment of a pair of lock armspivoted at one of their ends for diverging or converging movementrelative to each other attheir other or free ends, and having on theirfree ends strikers or bolts projectible for engagement with a suitablekeeper by diverging movement of the arms at their free ends andretractable for disengagement from said keeper by converging movement ofthe arms at their free ends.

Another feature of the invention is the employment of a cage member inwhich the strikers on the free ends of saidarms are received and bywhich they areguided and maintained in alinement during projection orretraction of the strikers for engagement with or disengagement from thekeeper by movement of said lock arms.

I attain these objects and such other objects as may later appear in thesubjoined specification descriptive by way of example of one of thepossible embodiments of the invention and shown in the accompanyingdrawings forming part of the specification, it being understood .that Imay make modifications and variations of the invention without departingfrom the spirit thereof or exceeding the scope of the appended claims.

In the drawings Fig. 1 is a plan of the lock, the cover of the housingbeing removed and the strikers being projected for engagement with asuitable keeper, or in looking position, and retained or set in lookingposition. 7

Fig. 2 is a plan of the lock and similar to SHEET-METAL LOCK.

1927. Serial No. 186,936.

Fig. 1, except that the strikers are shown retracted for disengagementfrom a suitable keeper, or in unlocking position, and are retained orset in unlocking position.

Fig. 3 is a sectional view on the line 33 of Fig. 1.

Fig. 4 is a plan of the cover of the lock casing or housing viewed fromthe under side thereof.

Fig. 5 is a plan of, the lock casing or housing formed by stamping fromthe sheet metal blank shown in Fig. 7.

Fig. 6 is an end view of Fig. 5.

Fig. 7 is a view of the extended sheet metal blank for forming the caseor receptacle portion of the housing by stamping the blank, and

Fig. 8 is a fragmentary perspective view of the guiding and alining cagemember.

Referring to Figs. 1, 2, and 3, the lock embodies the oblong casegenerally denoted by C, having the side walls 10 and end walls 11 and12, the side walls 10 for a portion of the length of the sides having attheir free edges the flanges 13 provided with screw holes for securingthe lock to a door or other closure means. The side walls 10 adjacent tothe end wall 12 have therein the openings 14, best seen in Fi 7, and thebottom 15 of the case has the aperture 16 therethrough which receivesthe spindle 17 having the manipulating knob 18 thereon.

The base and box member 19 is disposed on the bottom 15 of the case andhas near one end thereof the aperture 20 through which the spindle 17passes, and has near the other end of the member the upstandingtransverse rib 21. The member 19 is provided for a portion of the lengthof its base with the side walls 22 which extend upwardly to near thetop. line of the side walls 10 or" the case C. The side walls 22 are cutaway longitudinally for a distance at one of their ends from the baseline of the member 19 to about the middle longitudinal line of thesidewalls 22, the portions of these walls remaining after thus cuttingaway being bent inwardly to form the end walls 23 spaced away at theirbottom edges from the base of the member 19 and spaced away from eachother at their ends, the side walls 22 and end walls 23 forming a boxlike portion or" the member 19; the member 19 at one of itsends isspaced away on the bottom 15 ot' the case C from the end wall 11 byengagement of the spindle 17 in the aperture 20 and at its opposite endabuts the end wall 12 of the case, longitudinal movement of the memberbeing thereby prevented. The member 19 is formed by stamping from ametal sheet, by stamping being meant here and elsewhere herein any wellknown mannor of forming the member from a metal sheet by pressing orbending the sheet.

Each of the lock arms 24 is of the shape shown in the drawings. The lockarms 24 are pivotally supported at one of their ends and located onopposite sides of the spindle 17, the lock arms extending on each sideof the spindle 17 and being movable at their opposite or free endsdivergingly or convergingly relative to each other. The'lockarms 24 arespaced away at one of their ends from the base of the member 19 by thestuds and are spaced away therefrom at their other ends by resting onthe rib, 21. Substantially Onehaltt oi each of the lock arms is locatedin the box'like portion 01 the member 19 in a plane below the bottom.edges of the'end walls 23 and the other half of the lock arms is locatedin the open space of the case and passes under the end walls 23 andextends towards the end wall 12 otthe case.

Each of the lock arms24 is provided with a "diagonal slot S open at theend of the slot adjacent to an end wall 23 of the member 19, the slots Sconverging relative to each other. The coil spring 26 is disposed aroundthespindle 17 and respective ends 27 of this spring are secured to thelock arms at their arms 24, the tendency of the spring 26' being tocause diverging movement of thelock tree ends. Each lock arm 24 hassecured on the surface of the free end thereof by a headed pin 24' astriker or lock bolt 24 the loci; arms 24 being formed by stamping fr ma metal sheet.

Theshde plate retractor 28, when viewed as in Fig. 1, the lock arms 24-bemg in d1- verging position, has a rectangular main portion 29substantially wholly COIltELlIlOCl within the confines ot the box-likeportion of the'member '19, and a truncated cone shaped end portion 36passing under the end walls 23 oi the member 19 and extending outwardlyfrom the box-like portion of this member, the converging sides of theend portion 30 being bent downwardly to form ears 31 on the under sideof the end portion 30, the respective ears 31 engaging respective slots8 of the lock arms 24. The retractor 28 'which the spindle 17 passes.

extending to substantially the top line of the sides 22 of themember 19.The slide plate retractor 28 is disposed fiat 011 the surface of thelock arms 24 and is formed by stamping from a sheet of metal. I y

The knob actuated cam member 37 is disposed fiat on the ret-ractor 28and has the substantially circular apertured portion 39 and the arcuateportion 40. The apertured portion 39 engages snugly the annular grooveof the head 41 of the spindle 17 so that the cam member is actuated byrotatable move ment of theknob 18 of the spindle. The arcuate port-ionhas the eared ends 42 and 43 which respectively engage the respectiveabutments 35 and 36 of the retractor 28 when the knob 18 is rotated,theretractor being thereby moved in direction towards the spindle 17 andmoving the lock arms '24 against the tension of the spring 26 from thediverging position shown in Fig. 1 to the converging position shown inFig. 2, the

cam member 37 being formed by stamping from a sheet of metal. It isobvious that when the member 37 is rotated from the posi tion in Fig. 2,to that shown in Fig. 1, the lock arms 24 are formed into divergentposition. As the arms are moved divergingly, the retractor 28 movesdownward along the slots S towards the strikers 24, or into, what Iterm, projected position.

The alining cage 44, Fig. 8, consists of two fiat side portions 45and46, connected in spaced relation midway of their lengths sothattheir'top edges arein the same horizontal plane by a cross-piece 47the side portion 45 being less in height than the portion 46, the sideportions 45 and 46 being spaced apart by a distance slightly more thanthe width of the strikers 24 for slidably receiving the strikers betweenthe side portions, the cage 44 being disposed in the space at the end ofthe case Use that the side portion 46 lies against the end wall 12 ofthe case and rests at its lower edge on the bottom 15 of the case andthe side portion 45 rests onthe surfaces of the adjacent ends of thelock arms 24 with the strikers or lock bolts 24 between the sideportions 45 and 46,the cage at its ends abutting the sidewalls 10 of thecase C, the openends of the cage registering with the openings 14in theside walls 10 so that the strikers 24 are alined and guided forprojection and retraction through the openings 14 when the lock arms 24are moved to diverging or converging positions, the cage 44 being formedby stamping from a metal sheet.

The key actuated cam member 48, Figs. 3 and 4, is in shape similar tothe cam member 37 and is disposed on the under side of the cover 49 ofthe case 0, this cover having an aperture 50 therethrough which receivesa bushing 51 rotatable in the aperture 50, the cam member 48 beingsecured to the inner head 52 of the bushing for movement with thebushing. The bushing 51 has thereon the outer head 53 bearing on thecover 49 and having therein the opening 54 adapted to receive the stem55 for rotating the bushing when the stem 55 is actuated by a keyoperated look, not shown, accessible from the outer side of the door orclosure means. The

cam member 48 is provided with ears 56 which severally engage theabutments 35 and 36 of the member 19 and which when the bushing 51 ismoved by the stem 55 retractably move the retractor 28 whereby the lockarms 24 are convergingly moved and the strikers 24 are retracted tounlocking position, the cam member 49 being formed by stamping from ametal sheet.

The slide plate retractor 28, Figs. 1, 2 and 3, is provided at its endadjacent to the end wall 11 of the case G with a bent end portion 57with which the pin 58 of settable pin and slot means appurtenant to thebottom 15 of the case engages, the pin 58 when engaged with the innerside of the bent portions 57 retaining the strikers 24 in retracted orunlocking position, the pin 58 when engaged with the outer side of thebent portion 57 retaining the strikers 24 in projected or lockingposition and the lock then constituting a dead bolt lock.

The cover 49, Fig. 4, is formed by stamping from a metal sheet and isprovided with thebolthole 59, and with the aperture 50 before mentioned,and has at its ends the extensions 60 and 61; The cover is secured tothe case 0 by the bolt 62 passing through the hole 63 in the bottom ofthe case and between the movable ends of the lock arms 24 and-threadedinto the bolt hole 59, the extensions 60 and 61 being received'in therecesses 64 and 65 of the'end walls 11 and 12 for positioning the coveron the case.

The blanlgFig. 7, for forming the case C by stamping is a metalsheet'and includes the rectangular bottom section 15 having therethronghthe aperture 16 and bolt hole" 63, the side sections 10 on the bottomsection 15 and defined therefrom on their inner sides by the parallellongitudinal bend lines 66 and free on portions of their outer sides andhaving longitudinally extending securing flange sections 13 on portionsof their outer sides defined from the side sections by the bend lines 67parallel to the bend lines 66, said side sections having free ends andstriker openings 14 through the side sections adjacent to one oftheirfree ends, and end sections 11 and 12 defined on theirinner sides fromthe bottom section 15 by the parallel transverse bend lines 68 and freeon their outer sides and ends, the end section 11 having in its freeside the recess 64 and the end section 12 having in its free side therecess 65. V

To form the case C from said blank the ber, lock arms on said memberside sections 10 are bent on the bend lines 66 to lie at right angles tothe plane of the bottom section 15, the flange section 13 are bentoutwardly from the side sections on the bend lines 67 to lie in a planeparallel to the plane of the bottom section, and the end sections 11 and12 are bent on the bend lines 68 to lie at right angles to the bottomsection 15.

hat I claim and Letters Patent is:

1. In a lock, in combination, a pair of lock arms movable divergingly tolocking position and convergingly to unlocking position, means formoving the lock arms divergingly, a retractor embracing the said lockarms, said lock arms when moved divergingly moving said retractor toprojected position, said retractor when moved from projected position toretracted position moving said lock arms convergingly, hand oper atedmeans for moving the retractor from projected position to retractedposition, and means operated by an auxiliary lock for moving theret-ractor from projected position to retracted position.

2. In a lock, in combination, a pair of lock arms movable divergingly tolocking position and convergingly to unlocking position and havingstrikers on their divergingly or convergingly movable ends, means formoving the lock arms divergingly, a retractor embracing the lock arms,said lock arms when moved divergingly moving said retractor to projectedposition, said retractor when moved from projected position to retractedposition moving said lock arms conver 'in'gly, means for moving saidretractor from projected position to retracted position, and means forguiding and aliningsaid strikers in their movement when the lock armsare moved divergingly or convergingly.

3. In a lock, in'combination, a base mempivotally supported at one oftheir ends for diverging or converging movement at their opposite ends,said arms being movable divergingly to locking position and converginglyto unlocking position, means for moving the lock arms divergingly, aretractor embracing the lock arms, said arms when moved diverginglymoving said retractor to projected position, said retractor when movedfrom projected position to retracted position movin said armsconvergingly, and means for moving said retractor from projectedposition to retracted position and thereby moving the lock armsconvergingly.

' 4. In a lock, in combination, a base memher, look arms on said memberpivotally supported at one of their ends for or. converging movement attheir opposite ends, said arms being movable divergingly to lockingposition and convergingly to undesire to protect by diverging lookingposition, means for moving the lock 7 arms divergingly, a retractorembracing the mg said arms convergingly, hand operated means for movingsaid retractor from projected position to retracted position and therebymoving the lockarms convergmgly,

' and means, operated by an auxiliary lock 7 locking for moving saidretractor from projected position to retracted position and therebymoving the lock arms convergingly.

5. In a lock, in con'ibination, a base memer, lock arms on said basemember pivotally supported at one of their ends for diverging orconverging movement at their opposite ends and having strikers on saidopposite ends, said strikers being moved to locking position when saidarms are moved divergingly and moved to unlocking position when saidarms are moved convergingly, means for moving the lock arms divergingiy,a

retractor embracing the lock arms, saidarms when moved divergii'igiymoving said r tractor to projected position, said retractor when movedfrom projected position to retracted position moving said armsconvergingly, means for moving said retractor from projected position toretracted position and thereby moving the lock arms convergingly, andmeans for guiding and alining said strikers when they are moved bydiverging or converging movement of the lock arms.

6. In a lock, in combination, a pair of lock arms movable divergingly'to locking position and convergingly to unlocking position, a retractorembracing the lock arms, said arms when moved divergingly moving saidretractor to projected position, said retractor when moved fromprojected position to retracted position moving said arms convergingly,and means for retaining the retractor in projected position and therebyretaining said arms in l eking position and for retaining the retractorin retracted position and thereby retaining said arms in unlockingposition.

7. In a. lock, in combination, a case, pair of iockarms movabledivergingly to position and movable convergingiy to unlocking position,retractor embracing the lock arms, said arms when moved diverginglymoving said retractor to projected position, said retractor when movedfrom projected position to retracted position moving said armscon'vergingly, and means cooperating between said case and retractor forretaining the retractor in pro ected position and thereby retaining saldarms in tock ing position and for retaining the retractor in retractedposition and thereby retaining said arms in unlocking position.

8 In a lock, 1n combination, a base memthereot, said ears engaging saidber, a pair of lock arms superimposed on said memberand pivotallysupported at one of their ends for diverging or converging movement attheir opposite ends and having diagonal slots, the slot of one armconverging towards the slot of the other arm, said arms being movabledivergingly to locking position and convergingly to unlocking position,means for moving said arms divergingly, a-retractor having abutmentmeans on one face thereof and having dependent ears on the opposite facethereof, said ears engaging said slots, said armswhen moved diverginglymoving said retractor to projected. position, said retractor when movedfrom projected position to retracted position moving said armsconvergingly, and cam means engaging said abutment means for moving theretractor trom projected position to retracted position and therebymoving said arms convergingly.

9. In a lock, in combination, a base member, a pair of lock-armssuperimposed on said member and pivotallysupported at one or their endsfor diverging or converging movement at their opposite ends and havingdiagonal slots, the slots converging towards each other, said a 'msbeing movabie divergingly to locking position and convergingly tounlocking position, means'tor moving said arms divergingly, a retraotorhaving abutment means on one face thereof and dependent ears on theopposite face thereof, said ears engaging said slots, said arms whenmoved divergingly moving said retractor to projected position, "saidretractor when moved fromprojectedposition to retracted position movingsaid arms convergingly, hand operated cam means engaging said abutment.means for moving the retractor from projected position to retractedposition and thereby moving saio arms convergingly, and cam meansoperated by an anxiliary lock and engagii said abutment means tor novingthe retractor from pro jected position to retracted position and therebymoving said arms convergingly.

10. In a lock, incombination, a base member, apair of lock armssuperimposed on said member and pivotally supported at one of their endsfor diverging or converging movement at their opposite ends and havingtrikers on said opposite ends movable to locking position by divergingmovement of said arms and movable'to unlocking position by convergingmovement of said arms, said arms having slots therein, means for movingsaid arms divergingly, a retractor having abutment means on one facethereoi and dependent ears on the opposite face slots, said arms whenmoved divergingly moving said retractor to project-ed position, saidretractor when moved from projected position to re t-racted positionmoving said arms converg- Hit) ingly, cam means engaging said abutmentmeans for moving the retractor from pro jeoted position to retractedposition and thereby moving said arms convergingly, and a cage forreceiving said strikers and guiding and alining the strikers in theirmovements to locking or unlocking position when said arms are moveddivergingly or convergingly.

11. In a lock of the character described, a member consisting of arectangular base having at one end portion thereof stamped side wallsand stamped end walls at one end of said side walls, said end wallsbeing cut away at their lower edges from the face of said base andthereby spaced away from the base at their lower edges, said end portionand side and end walls constituting a box like structure on said base,the other end portion of said base extending in direction away from saidstructure in the longitudinal line of the base and being free of sideand end walls and having a free end and an upstanding stamped transverserib near its free end. a

12. In a lock of the character described, cooperating lock arms, saidarms being of similar shape, each arm having an apertured end and adiagonal slot in one side of the arm intermediately of the ends of thearm, the end of the arm opposite said apertured end being adapted forreceiving a striker thereon, the slots of the arms converging towardseach other when the aans are cooperatively disposed.

13. In a lock of the character described, co-operating arms of similarstamped contour, each arm having a stamped aperture in one end of thearm and a stamped diagonal slot in one side of the arm intermediately ofthe ends of the arm, the end of the arm opposite said apertured endbeing adapted for securing a striker thereon, the slots of the armsconverging towards each other. when the arms are co-operativelydisposed.

14. In a lock of the character described, a cam member of stampedcontour and having an arcuate main portion and a circular aperturedportion for rotatably mounting the member, said arcuate portion havingat its ends stamped ears disposed at an angle to the plane of thearcuate portion and constituting cam faces.

15. In a lock, in combination, a casing having oppositely relatedopenings in its side walls at one end of the casing, strikersprojectible or retractable through said openings, and means disposed insaid. casing adjacent to said openings for receiving said strikers andguiding and alining the strikers when they are projectedor retractedthrough said openings.

16. In a lock of the character described, a cage having stamped parallelside walls free at their ends, one of said side walls being of lessheight than the other, the top edges of the side walls lying in the sameplane and being connected about midway of the length of the side wallsby a stamped cross-piece.

17. A blank for forming a lock casing by bending the blank on the bendlines thereof, said blank being of sheet metal and including an oblongbottom section side wall sections on the bottom section and definedtherefrom along one of their sides by parallel longitudinal bend linesand free on their ends and for a portion of their other sides and havingopenings through the sections near one of their ends, said openingsregistering when the side walls are in assembled bent relation, end wallsections on the bottom section and defined therefrom on one of theirsides by parallel transverse bend lines and free on their other side andends, and securing flange sections on the side wall sections and definedtherefrom on one of their sides for a portion of the length of the sidewall sections by longitudinal bend lines parallel to the first mentionedbend lines, said flange sections being free on their other sides and attheir ends.

Signed at Poughkeepsie, in the county of Dutchess and State of New York,this 23rd day of April, A. D. 1927.

AUGUST F. W. VIEHWVEGER.

